Gumming machine



GUMMING MACHINE Filed 001',- v18. 1921 5 Sheets-Sheet l @Holme/1.!

' July 24, 1923.

A. T. WALRAVEN GUMMING MACHNE Filed Oct. 18. 1921 3 Sheets-Shes?l 2 July 24,1923.

A. T. WALRAV'EN GUMMING MACHINE Filed oct. 18 1921 3 Sheets-Sheet 3 Patented July 24, 1923.

PATENT QFFICE.

l ALBERT T. wALRAvEN, or DALLAS, TEXAS.

GUMMING- MACHINE.

v Application led October 18, 1921. Serial No. 508,459.

To all whom t may concern Be it known that I, ALBERT T. WALRAVEN, a citizen of the United States, residing at Dallas, in the county of Dallas and State f Texas, have invented` certainnew and useful Improvements in Gumming Machines, of

which the following is a specification.

This invention relates to new and useful improvements in gumming machines.

The object of the invention is to provide a machine for applying glue to certain portions of sheets which are fed into said machine. A further object of the invention is to apply the glue to restricted portions in a rapid and efficient manner. Another ob ject of the invention is to convey the sheets thru the machine for a period of time before discharging the same in order to give the glue an opportunity to dry, and thus pre-l vent the sheets from sticking to each other when they are discharged in a pile. A further Object is to provide means for automatircally coating presser feet with gluev which is imprinted upon the sheets.

In carrying out the invention a glue applying device is supported above a conveyor belt on which the sheets are carried. A fountain is providedv and means is interposed, for applying the glue from the fountain to the said device. yOther conveyors are associated with the main conveyor for carrying the wet sheet thru circuitous path so as to give it an opportunity to dry before it is discharged.

A construction designed to carry out the invention will be hereinafter described to gether with other features of the invention.

rlhe invention will be more readily understood from a reading of the specification and by reference to the accompanyingdrawings, in which an example of the invention is shown and wherein:

Fig. 1 is a plan view of a machine constructed in accordance with my invention,

Fig. 2 is a longitudinal 'vertical sectional view of the same, v

Fig. 3 is an enlarged longitudinal sec- .tional view of the upper portion of the ma chine,

Fig. 4 is an elevation of the feeding gate,

Fig. 5 is a detail of one of the take-up devices for the presser foot'cylinde'r,

Fig. 6 is a detail ofthe gate,

7 is a plan view of a sheet having portions coated with glue and illustrating the sheets which are gummed by this machine,

Fig. 8 is an enlarged cross section of the roller driving means,

Fig. 9 is a vertical sec-tional detail on the line 9-9 of Fig. 8, and

Fig. 10 is an enlarged longitudinal sectional view on the line 10-1O of Fig. 1.

In the drawings the numeral 10 designates an elongated base whichmay be suitably constructed and fastened together. On opposite sides near the front end of the base upright standards 11 are mounted, while on opposite sides near the rear of the base similar upright standards 12 are secured. Intermediate standards 13 are also mounted on opposite sides and between the standards 11 and 13 other intermediate standards 14 areA mounted on opposite sides. Longitudinal side bars 15 extend from the standard 11 to the standard 13 on each side and rest upon the standard 14. Similar bars 15 extend from the standard 13 to the standard 12 on each side'of the machine and each bar 15* is alined with the bar 15 on its side of the machine..

A driving roller 16 is mounted in the standards 11 between the bars 15, and supports the forward end of a conveyor belt 17 which is preferably made of fabric such as duck or any other lsuitable material. The rear end of said belt is supported on a roller 18 mounted between the standards 12. The

upper run of this belt is horizontal and substantially level with the top of the bars 15 and 15. The lower run of the belt passes under a roller 19 mounted between the standards 14 and that portion of said belt which extends between the rollers 18 and 19 is inclined downwardly toward the latter roller. The upper run of the belt is also supported on an intermediate roller 20 mounted between the standards 13. A roller 21 is mounted immediately above the roller 20, while a similar roller 22 is mounted immediately above the roller 16. Between the upper ends of the standards 11, a roller 23 is mounted, while a roller 24 is mounted between'the upper ends ofthe standards 13. These rollers have circumferential grooves to receive endless strings 25, -The strings placed on this tableand kfed in between the rollerslG and 22. The strings 25 travel in such close proximity to the belt as to hold a sheet'o't' 'paper flat 'and smooth upon the sin face of said belt. In Fig,` 7, l havefshown a a sheet A which this machine is adapted to gum, but itis to be understood that Ithe use of the machine is not to be limited tosnch a sheet. The sheet A has its corners cut oil' and 'atfeach-corner isprovided with a gum panel B. The particular sheet illustrated is designed 'fdr 4a book cover protector and it is important that the glue be imprinted on restricted portions thereof.

On'each bar 15 I' mounta take-up device 28'in which a sliding bearing box 29 is mounted and vdepressed by a coiled spring 30. The boxes29 supportthe ends ot a shaft-.31 extending transversely of the machine. On this shaft is mounted a cylinder 32. At each end 'the cylinder is provided with radially projecting presser feet 33.' The tace of each foot lis shaped to imprint one oi the panels B.4 .The 'feet are arranged in pairs, a pair projecting from each side ojt' the cylinder.

Each Jfoot of Ia 'p'air is spaced from the other so as to properly imprint the panels B, Lat Athe end of the sheet A. Arranging two pairs oi' presser feet at each end o't the cylinder, two sheets may be imprinted at yeach revolution ot the cylinder.

, In rear of each take-np 281 mount on the bar 15 an upright bracket 34. Each bracket has la hanger on its inner side and a glue reservoir or tank 86 is supported in these hangers. The tank has its forward end 37 inelinedtowardthe presser 'feet and terminating at a lower elevation than the upper edge of the tank. Arms 3,8 have their rear ends pivoted to `the upper Vends or' the brackets 34 and extend forwardly. A brush cylinder 39 is jonrnaled between the forward ends of said arms and issuspended over the ed'ge 'ofjthe front 37. The brush cylinder hasbristles only at itsends so as to wipethe acesofthe feet 3 3, and not topick up unnecessary ghie. As shown best in Fig, 3, flat springsfll-O secured to the brackets bear u'pon the arms 38 so as to i'orcethe brush cylinder down into ceintactwith the presser feet and also to 4canse it to dip into the tank topick up the glue. As the presser "foot cylinder is revolved the brush cylinder will be revolved by a belt 8O running over pulleys 8l and 82 respectively mounted on the shaft 31 and the shaft of the brush.

n order `that the sheets A, may be properly fed under the presser feet, I mount a swinging gate 41"on a-shaft 42 supported in bearing boxes 43 on the bars 15 adjacent the rollersilband 22. This gate has its lower edge provided lwith notchesv44 thru which the strings 25 uinay ipass and whereby the lower edge of said gate may swing into close relation with the `b`elt17 and lp'reve'ntvthe passage or' a sheet untilsaid gate lis vswung rearwardly".` rllie gate is placed at sucht distance from the cylinder 32 -asto cause the sheet to properly ride under'the presser 'feet 33, when said sheet is releasedf l For driving the `parts l provide 'pulley I 45 which is driven by a belt 46 :trom any suitable "source, The pulley 45 is l'nounted on a s haift 45 (Fig. 8) on which a gear wheel 47' and a. gear arealso munted 'on opposite isides ot the bar 15. Reterring to Fig. '3, the gea-r wheel 47 is driven in a counterrlock-wise direction. The gear '48 meshes with a pini'on'4`8 mounted 'on the shaft ofthe 'rnllei' 16. Apulley on the sha'l'to't the roller 1 6 drives a tpiilley8`4 fon the shaft `ot the roller Q2 bya belt S5. this arrangement the ico-acting portions of the belt 17 and the strings arecausedto travel rearwardly.` 4'lliefgetar 47falso'ineszlies with :a gear 49 which in turn drivesidler gears 50 and 50 allot' Athese gears being` suitably mountedon thebar15- The gear 50l` 'drives a la.rger"ge`arj51 whichtis in-ounted ontheshaft 31 of the presser ootcylinderz The arrows in F ig. "3, indicatethedirecticn of reif'ol'ution otthegears vand it willbe 'seen that 'the presser foot .cylinder is properly revolved to over the sheet A. It is to be understood that various means for driving the parts may'ibe employed and the invention is not to be limited tb 'the structure illustrated and described.

For swinginglthe' gate il mount 'an arm on thesame just insitleoit the bar 1 5 soas toi-est upn a cam 53 which is mounted on thle shaft v54 on which the gear' 50 isniount ec.

latter. It isobvious AthatUthe "glu'e 'which'l has been imprinted upon the sheet willfbe wet and,v therefore, 'ttlie slieet'was'l immediately delivered from the mahine, i' the. next sheet delivered would .stick thereto; iIt V.is necessary for the sheet to remain in the nia- This gear meshes with and is driven by the idler 49. Each time the cam revolves i r z vi the gate is swung down to permit the pass i of the string passaround andunder the end i of the belt 17, which issupportedon the' `chine until the glue yis dried and this is acroller,A 18, while the under' run of fthe strings are carried around and under the 'roller' The upper run of the strings 58 aresupport- -ed on intermediate rollers 59;`mounted `be'- tween the standards13 and 14. The sheet upon reaching the rear of the belt 17.is carried between vtlie'strings and the belt and passes under the roller 18. The strings 58 support the sheets and carryit forwardly and downwardly to the front of the frame.

y The strings diverge from the bottom run of the belt 17 so as to free the sheet therefrom.

A second` string conveyor is mounted beA low the rst and a canvas belt or conveyor 59 is interposed therebetween. The conveyor 59 has its forward end passing over a roller 60 mounted above the roller 57, while its rear end is supported on a roller 61 mounted between the standards 12.` The upper run of the conveyor 59 passes under the roller 57 and thus received the sheet A therefrom. The upper run of said 'conveyor is supported on rollers 62 mounted between the standards 13 & 14. The lower run of the belt 59 passes over a roller 63 below the roller 57. The conveyor 59 carries the sheetv A rearwardly and delivers it to the strings 64 of the second string conveyor. This string conveyor has its rear end supported on a roller 65 above the roller 61 and its forward end supported on a roller 66 mounted between the standards 11. The strings pass under the rear end of the con veyor 59 and diverge fromthe same. The strings are supported on rollers 67 mounted between the standards 13 and 14. A fabric conveyor 68 has its forward end supported on a roller 69 above the roller 66, while its rear end is supported on a' roller 70 mounted between the standards 13. The upper run of the conveyor 68 passes under the roller 66, and is supported on a roller 71 mounted between the standards 14. The lower run of said conveyor passes around a roller 72 below the roller 66. When a sheet is delivered to the conveyor 68 it is lcarried rearwardly and enters between a pair of endless belts 73 and 74, from which it is discharged into a tray 75.

' 74 are suitably driven and the details of the same are unessential as they form no part of the invention.

It will be noted that the conveyors and The belts 73 and the stringsv diverge from each `other so that when a sheet is deliveredfrom one to the other it is freed from the one from which it has been delivered. The sheet will be carriedback and forth thru thev same several times before being delivered and under or-' dinar'y conditions should be dry when discharged. I'Iowever,` if 'necessary artiiicial heating means could be employed.

In operatingthevmachine the operator places the sheet A upon the table 26 and slides its forward edge in between the strings '25 yand they belt conveyor 17 The sheet is carried rearwardly until it contacts with the gate 41. 'Ihe gate 41 arrests thel sheet and at the proper time is swung so as torelease thensheet. This is necessary in order that the forward edge of said` sheet may arrive under the cylinder ,32 at` the proper time for the advancing presser foot on each side thereof to register with the forward edge of said sheet and properly imprint the same as it is carried under said cylinder. The presser feet are supplied with glue by the brush 39. The sheet is conveyed rearwardly and passes around the roller 18 onto the strings 58 from which it is conveyed back and forth thru the same over the conveyors 59, 64 and 68, until it is discharged between the conveyors 73 and 74 at which time it will be dry and ready for use. i

It is obvious that various changes in the construction and arrangement of the parts may be made without departing from the spirit of the invention.

What I claim, is:

1. In a gumming machine, a support, an endless belt mounted on the support, retaining means disposed over the belt and moving therewith,y a revolving imprinting device mounted immediately over the belt, means for supplying said device with glue, and a plurality of' diverging conveyors receiving the work in sequence after it passes from the belt.

2. In a machine for gumming book cover sheets, a support, a cylinder mounted on the support, an endless belt passing under the cylinder, a plurality of radial presser feet carried by the cylinder at each end and coacting with lthe belt, -a glue receptacle adjacent the cylinder, a glue applying roller dipping in the receptacle and engaged by the presser feet, retaining means disposed immediately over and moving with the belt and under the cylinder, said retaining means traveling between the presser feet at the opposite ends of the l cylinder, and means for imparting motion to the belt, retaining means, and roller. y

3. In a machine for gumming book cover sheets at the four corners only, a support, a revoluble cylinder mounted on the support, radial presser feet projecting from the cylinder in position to imprint `the corners only, of a book cover sheet, an endless belt' for passing the sheet under said feet, means for applying glue to said feet, and retain-` ing means moving Wit-h the belt for hold-` ing the sheet on the belt.

4. In a-"book cover gumming machine, a supporting frame, rollers mounted at opposite ends of the frame, an endless belt having its-ends supported 0n the rollers, a revoluble cylinder mounted on the frame over the belt, a glue receptacle mounted over the bel-t, presser feet lextending radially from the ends of the Cylinder, retaining meanslpassing under the central portion of the cylinder `and free Strom ythe feet, a roller dipping in the glue receptacle, and means for imparting motion to the Cylinder, belt,

v retaining means and roller.

5. In a book eover `gumming machine, a supporting frame, rollers mounted at opposite `ends of lthe frame, anl endless belt having its ends supported on lthe. rollers, a revoluble cylinder mounted on the frame over the belt, a glue receptacle mounted over the belt, presser `feet extending radially from the ends of the cylinder, retaining means passing under the central portion 

